| 1 | n/a | from test import support |
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| 2 | n/a | gdbm = support.import_module("dbm.gnu") #skip if not supported |
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| 3 | n/a | import unittest |
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| 4 | n/a | import os |
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| 5 | n/a | from test.support import TESTFN, unlink |
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| 6 | n/a | |
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| 7 | n/a | |
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| 8 | n/a | filename = TESTFN |
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| 9 | n/a | |
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| 10 | n/a | class TestGdbm(unittest.TestCase): |
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| 11 | n/a | def setUp(self): |
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| 12 | n/a | self.g = None |
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| 13 | n/a | |
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| 14 | n/a | def tearDown(self): |
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| 15 | n/a | if self.g is not None: |
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| 16 | n/a | self.g.close() |
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| 17 | n/a | unlink(filename) |
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| 18 | n/a | |
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| 19 | n/a | def test_key_methods(self): |
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| 20 | n/a | self.g = gdbm.open(filename, 'c') |
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| 21 | n/a | self.assertEqual(self.g.keys(), []) |
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| 22 | n/a | self.g['a'] = 'b' |
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| 23 | n/a | self.g['12345678910'] = '019237410982340912840198242' |
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| 24 | n/a | self.g[b'bytes'] = b'data' |
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| 25 | n/a | key_set = set(self.g.keys()) |
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| 26 | n/a | self.assertEqual(key_set, set([b'a', b'bytes', b'12345678910'])) |
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| 27 | n/a | self.assertIn('a', self.g) |
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| 28 | n/a | self.assertIn(b'a', self.g) |
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| 29 | n/a | self.assertEqual(self.g[b'bytes'], b'data') |
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| 30 | n/a | key = self.g.firstkey() |
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| 31 | n/a | while key: |
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| 32 | n/a | self.assertIn(key, key_set) |
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| 33 | n/a | key_set.remove(key) |
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| 34 | n/a | key = self.g.nextkey(key) |
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| 35 | n/a | self.assertRaises(KeyError, lambda: self.g['xxx']) |
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| 36 | n/a | # get() and setdefault() work as in the dict interface |
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| 37 | n/a | self.assertEqual(self.g.get(b'xxx', b'foo'), b'foo') |
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| 38 | n/a | self.assertEqual(self.g.setdefault(b'xxx', b'foo'), b'foo') |
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| 39 | n/a | self.assertEqual(self.g[b'xxx'], b'foo') |
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| 40 | n/a | |
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| 41 | n/a | def test_error_conditions(self): |
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| 42 | n/a | # Try to open a non-existent database. |
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| 43 | n/a | unlink(filename) |
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| 44 | n/a | self.assertRaises(gdbm.error, gdbm.open, filename, 'r') |
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| 45 | n/a | # Try to access a closed database. |
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| 46 | n/a | self.g = gdbm.open(filename, 'c') |
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| 47 | n/a | self.g.close() |
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| 48 | n/a | self.assertRaises(gdbm.error, lambda: self.g['a']) |
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| 49 | n/a | # try pass an invalid open flag |
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| 50 | n/a | self.assertRaises(gdbm.error, lambda: gdbm.open(filename, 'rx').close()) |
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| 51 | n/a | |
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| 52 | n/a | def test_flags(self): |
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| 53 | n/a | # Test the flag parameter open() by trying all supported flag modes. |
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| 54 | n/a | all = set(gdbm.open_flags) |
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| 55 | n/a | # Test standard flags (presumably "crwn"). |
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| 56 | n/a | modes = all - set('fsu') |
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| 57 | n/a | for mode in sorted(modes): # put "c" mode first |
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| 58 | n/a | self.g = gdbm.open(filename, mode) |
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| 59 | n/a | self.g.close() |
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| 60 | n/a | |
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| 61 | n/a | # Test additional flags (presumably "fsu"). |
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| 62 | n/a | flags = all - set('crwn') |
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| 63 | n/a | for mode in modes: |
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| 64 | n/a | for flag in flags: |
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| 65 | n/a | self.g = gdbm.open(filename, mode + flag) |
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| 66 | n/a | self.g.close() |
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| 67 | n/a | |
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| 68 | n/a | def test_reorganize(self): |
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| 69 | n/a | self.g = gdbm.open(filename, 'c') |
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| 70 | n/a | size0 = os.path.getsize(filename) |
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| 71 | n/a | |
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| 72 | n/a | self.g['x'] = 'x' * 10000 |
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| 73 | n/a | size1 = os.path.getsize(filename) |
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| 74 | n/a | self.assertTrue(size0 < size1) |
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| 75 | n/a | |
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| 76 | n/a | del self.g['x'] |
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| 77 | n/a | # 'size' is supposed to be the same even after deleting an entry. |
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| 78 | n/a | self.assertEqual(os.path.getsize(filename), size1) |
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| 79 | n/a | |
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| 80 | n/a | self.g.reorganize() |
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| 81 | n/a | size2 = os.path.getsize(filename) |
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| 82 | n/a | self.assertTrue(size1 > size2 >= size0) |
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| 83 | n/a | |
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| 84 | n/a | def test_context_manager(self): |
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| 85 | n/a | with gdbm.open(filename, 'c') as db: |
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| 86 | n/a | db["gdbm context manager"] = "context manager" |
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| 87 | n/a | |
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| 88 | n/a | with gdbm.open(filename, 'r') as db: |
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| 89 | n/a | self.assertEqual(list(db.keys()), [b"gdbm context manager"]) |
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| 90 | n/a | |
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| 91 | n/a | with self.assertRaises(gdbm.error) as cm: |
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| 92 | n/a | db.keys() |
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| 93 | n/a | self.assertEqual(str(cm.exception), |
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| 94 | n/a | "GDBM object has already been closed") |
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| 95 | n/a | |
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| 96 | n/a | if __name__ == '__main__': |
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| 97 | n/a | unittest.main() |
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